Regarding this issue, Amazon Brand Registry requires submission of a verification code to prove that you are not a robot. The steps to submit the verification code are as follows:

1. On the brand registration page, find the "Verification Code" column.

2. Enter the displayed letters and numbers in the verification code box.

3. If you can't see the verification code clearly, click the "Refresh" button to get a new verification code.

4. Click the "Submit" button to complete the submission of the verification code.

Please note that the verification code is usually case-insensitive, so you can enter uppercase or lowercase letters. If you have tried multiple times and still cannot pass the verification code verification, please contact Amazon customer service for help.